Web Publications

Observing Eclipsing Binaries

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Marvin E. Baldwin

8655 N. Co. Road 775 E., Butlerville, IN 47223

Received: July 23, 1993

Abstract

For more than a quarter of a century the AAVSO has sponsored a program for regular observation of a number of eclipsing binaries for the purpose of tracking changes of period and updating the ephemerides when necessary.  Most of the observations have been made visually, but some individuals have applied photoelectric photometry to this project, adding a few very valuable minima to our archives.  Here, we limit our discussion to visual observing and examine two distinct observing strategies for determining times of minima.